Added support for running the agent behind a web proxy (--proxyurl) for both the PS module and the DSC resource

VSTSAgent/DSCResources/xVSTSAgent/xVSTSAgent.psm1

@@ -131,6 +131,10 @@ function Set-TargetResource {
         [System.String]
         $Work,
 
+        [parameter(Mandatory = $false)]
+        [System.String]
+        [string]$ProxyUrl,
+
         [parameter(Mandatory = $true)]
         [System.String]
         $ServerUrl,
@@ -171,6 +175,7 @@ function Set-TargetResource {
 
         if ( $Work ) { $installArgs['Work'] = $Work }
         if ( $LogonCredential ) { $installArgs['LogonCredential'] = $LogonCredential }
+        if ( $ProxyUrl ) { $installArgs['ProxyUrl'] = $ProxyUrl }
         
         Install-VSTSAgent @installArgs
     }

VSTSAgent/VSTSAgent.psm1

@@ -111,7 +111,10 @@ function Find-VSTSAgent {
         [switch]$Latest,
 
         [parameter(Mandatory = $false)]
-        [string]$Platform
+        [string]$Platform,
+
+        [parameter(Mandatory = $false)]
+        [string]$ProxyUrl 
     )
 
     if ( $Latest ) {
@@ -243,6 +246,10 @@ function Install-VSTSAgent {
         [parameter(Mandatory = $true)]
         [uri]$ServerUrl,
 
+        [parameter(Mandatory = $false)]
+        [ValidateScript({ $_ -match "http://\d{1,3}[.]\d{1,3}[.]\d{1,3}[.]\d{1,3}:\d{1,5}" })]
+        [string]$ProxyUrl,
+
         [parameter(Mandatory = $false)]
         [switch]$Replace,
 
@@ -271,6 +278,7 @@ function Install-VSTSAgent {
     if ( $MinimumVersion ) { $findArgs['MinimumVersion'] = $MinimumVersion }
     if ( $MaximumVersion ) { $findArgs['MaximumVersion'] = $MaximumVersion }
     if ( $RequiredVersion ) { $findArgs['RequiredVersion'] = $RequiredVersion }
+    if ( $ProxyUrl ) {  $findArgs['ProxyUrl'] = $ProxyUrl }
 
     $agent = Find-VSTSAgent @findArgs | Sort-Object -Descending -Property Version | Select-Object -First 1
     if ( -not $agent ) { throw "Could not find agent matching requirements." }
@@ -319,6 +327,7 @@ function Install-VSTSAgent {
 
     if ( $Replace ) { $configArgs += '--replace' }
     if ( $LogonCredential ) { $configArgs += '--windowsLogonAccount', $LogonCredential.UserName }
+    if ( $ProxyUrl ) { $configArgs += '--proxyurl', $ProxyUrl }
     if ( $Work ) { $configArgs += '--work', $Work }
 
     if ( -not $PSCmdlet.ShouldProcess("$configPath $configArgs", "Start-Process") ) { return }